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$549+ Cheap flights from Porto Alegre (POA) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
POA — SEA
Jul 15 — Jul 221
Wed 7/15
Wed 7/22
1 adult, Economy
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Cheap flight deals from Porto Alegre to Seattle

Cheapest flights from Porto Alegre to Seattle
Explore the most affordable flight options available from Porto Alegre to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2026.

This LATAM Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:25 am
POA
-
SEA
2 stops19h 40m
LATAM Airlines
Sat 2/207:20 am
SEA
-
POA
2 stops29h 55m
LATAM Airlines
Deal found 6/11$905
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/42:05 pm
POA
-
SEA
2 stops25h 53m
American Airlines
Sat 9/52:07 pm
SEA
-
POA
2 stops21h 28m
American Airlines
Deal found 6/12$919
This American Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:25 pm
POA
-
SEA
2 stops23h 36m
American Airlines
Sat 2/2010:30 am
SEA
-
POA
2 stops24h 05m
American Airlines
Deal found 6/14$924
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:25 pm
POA
-
SEA
2 stops34h 11m
United Airlines
Fri 10/27:11 am
SEA
-
POA
2 stops22h 44m
United Airlines
Deal found 6/14$955
This GOL deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:00 pm
POA
-
SEA
2 stops28h 01m
GOL
Sat 2/2011:51 am
SEA
-
POA
2 stops26h 09m
GOL
Deal found 6/10$959
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/193:30 pm
POA
-
SEA
2 stops23h 17m
United Airlines
Sat 7/45:00 am
SEA
-
POA
2 stops25h 35m
United Airlines
Deal found 6/10$961
This CVC Viagens deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CVC Viagens is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:00 am
POA
-
SEA
2 stops26h 49m
LATAM Airlines
Wed 9/1611:08 pm
SEA
-
POA
2 stops32h 07m
LATAM Airlines
Deal found 6/11$964
This GOL deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:20 pm
POA
-
SEA
2 stops35h 32m
GOL
Fri 9/2512:02 pm
SEA
-
POA
2 stops23h 33m
GOL
Deal found 6/10$1,042
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/195:10 pm
POA
-
SEA
2 stops29h 55m
United Airlines
Sun 7/55:15 pm
SEA
-
POA
2 stops40h 50m
United Airlines
Deal found 6/10$1,072

Find flight deals from Porto Alegre to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$905
(LATAM Airlines)

One-way from

$549
(123 Milhas)

Popular in

July

Cheapest in

February

Average price

$1,069
Provider with most accurate pricing for Porto Alegre Salgado Filho-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Porto Alegre Salgado Filho-Seattle/Tacoma Intl flights.
Search Deals
From Porto Alegre Salgado Filho to Seattle/Tacoma Intl
Search Deals
One-way flight from Porto Alegre Salgado Filho to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 32% potential increase in price ($409 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease ($99 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto Alegre to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 15, 2026.
Use the filters below to find and compare flights from Porto Alegre to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 12/3

7:25 am-10:05 pm

2 stops19h 40m

Seattle/Tacoma Intl

Sat 2/20

7:20 am-6:15 pm

2 stops29h 55m

$905
Quickest round-trip

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 12/3

6:25 pm-1:01 pm

2 stops23h 36m

Seattle/Tacoma Intl

Sat 2/20

10:30 am-3:35 pm

2 stops24h 05m

$924

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Mon 9/14

3:25 pm-10:45 pm

2 stops35h 20m

Seattle/Tacoma Intl

Fri 10/2

7:11 am-2:35 pm

2 stops27h 24m

$955

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 9/16

5:10 pm-9:36 pm

2 stops32h 26m

Seattle/Tacoma Intl

Wed 10/7

7:11 am-2:35 pm

2 stops27h 24m

$955

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 12/3

2:00 pm-1:01 pm

2 stops28h 01m

Seattle/Tacoma Intl

Sat 2/20

11:51 am-7:00 pm

2 stops26h 09m

$959

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Tue 9/1

11:00 am-9:49 am

2 stops26h 49m

Seattle/Tacoma Intl

Wed 9/16

11:08 pm-11:15 am

2 stops32h 07m

$964

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 9/10

4:20 pm-11:52 pm

2 stops35h 32m

Seattle/Tacoma Intl

Fri 9/25

12:02 pm-3:35 pm

2 stops23h 33m

$964

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Tue 8/4

8:05 pm-10:02 pm

2 stops29h 57m

Seattle/Tacoma Intl

Sat 9/5

8:05 am-5:00 pm

2 stops28h 55m

$1,112
Cheapest one-way

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 11/5

5:30 pm-11:40 pm

2 stops35h 10m

$549
Quickest one-way

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 11/5

3:30 pm-2:18 pm

3 stops27h 48m

$874

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Porto Alegre-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto Alegre-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto Alegre-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto Alegre-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Porto Alegre-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Porto Alegre to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Porto Alegre with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Porto Alegre to Seattle

How much does it cost to fly round-trip from Porto Alegre to Seattle?

Related info for your journey

Find useful and relevant information for your journey from Porto Alegre to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Porto Alegre to Seattle?

    LATAM Airlines, American Airlines, and United Airlines can get you from Porto Alegre to Seattle in just under 19h 40m. Your travel time can differ by up to 15h 40m. There are 6926 mi between Porto Alegre and Seattle. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Porto Alegre to Seattle that include hotel bookings?

    Yes. In addition to deals on Porto Alegre to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto Alegre to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto Alegre to Seattle.

  • Can I find deals for business class flights from Porto Alegre to Seattle?

    Yes. Cheapflights offers flight deals from Porto Alegre to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

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Puyallup
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